Figure 2.1 Schema diagram for the database in Figure 1.2. STUDENT Name Student_number Class Major COURSE Course_name Course_number Credit_hours Department PREREQUISITE Course_number Prerequisite_number SECTION Section_identifier Course_number Semester Year Instructor GRADE REPORT Student number Section_identifier Grade

Figure 2.1 Schema diagram for the database in Figure 1.2. STUDENT Name Student_number Class Major COURSE Course_name Course_number Credit_hours Department PREREQUISITE Course_number Prerequisite_number SECTION Section_identifier Course_number Semester Year Instructor GRADE REPORT Student number Section_identifier Grade

Oracle 12c: SQL

3rd Edition

ISBN:9781305251038

Author:Joan Casteel

Publisher:Joan Casteel

Chapter4: Constraints

Section: Chapter Questions

Problem 9RQ: What is the difference between disabling a constraint and dropping a constraint?

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